Patent GB-494977-A (GB)
Abstract: 494,977. Calculating - apparatus. REMINGTON RAND, Inc. May 20, 1937, No. 14072. Convention date, June 4, 1936. [Class 106 (i)] In a calculating-machine means are provided for rounding off the figures in the result of a calculating operation comprising, in the denomination in which the lowest digit is to appear, a cup-shaped registering member having its walls cut away between upper and lower digital limits to a depth representing half the number of digits, and in each of the higher denominations a cup-shaped registering member having a number of steps representing the digits in the respective denomination, and mechanism for transferring a unit to the next higher denomination when the first mentioned cupshaped member registers a digit above the upper limit. The invention is described as applied to the type of machine described in Specification 307,407, [Class 106 (i)], wherein a series of shafts 91, Figs. 4, 5, and 6, arranged in parallel relation carries a number of stepped receivers 93 slidable thereon in telescopic relation and interconnected by lugs 95 on sleeves 97 carried by collars 98 adapted to be coupled to the setting mechanism. The end receivers 930 in denominations to the left of the first denomination have steps 940 that co-operate with a shiftable lug 118 and are formed with a lug 269 to engage a bracket 119. The receiver in the first denomination is connected directly to its shaft 91 while the receivers 930 are connected to their shafts by collars 941. Each shaft 91 carries a cam head 112, Figs. 4, 7, and 8, arranged to engage a rack 114 to which is connected the lug 118 to co-operate with the steps 940 of the receiver of next higher denomination for the purpose of effecting transfer. The end of each shaft 91 is connected to a stepped head or register cup 110 with which co-operates a corresponding finger or feeler 120. Each shaft 91 is provided with a bevel gear 232 that meshes with a bevel gear 231 loosely mounted on a shaft 230 but normally coupled thereto by means of a lug 234 engaging a notch in a sleeve 233 splined to the shaft. When the shaft 230 is rotated counterclockwise in Fig. 4 the gears 231 are freed so that the shafts 91 are free to rotate under control of their springs 100 to take up the setting. Thereafter the fingers 120 are released to feel the steps of the registering heads 110 to transmit the result to a totalizing or printing mechanism. For rounding off or approximating by discarding end decimal figures the ordinary cup-shaped member 110 is replaced by a cut-away member 50, Figs. 3 and 10, so that when the true digit in the denomination in which the lowest indicated digit is to appear is below three zero is actually indicated, when the digit is between three and seven, five is indicated, and when the digit is seven or above, zero is indicated and one unit is transferred to the next higher denomination. The cam disc 112 associated with the member 50 is so arranged as to effect transfer when the member 50 moves beyond the seven position. A slot 52 is provided in the member 50 between the " 9 " and " 0 " position to permit free movement of the feeler 120 during the taking of a total. U.S.A. Specification 2,084,831 also is referred to.